package SetKnowledge;

import java.util.HashSet;
import java.util.Set;

public class Test {
	public static void main(String[] args) {
		Set<Integer> result = new HashSet<Integer>();
		Set<Integer> set1 = new HashSet<Integer>() {
			{
				add(1);
				add(3);
				add(5);
			}
		};
		Set<Integer> set2 = new HashSet<Integer>() {
			{
				add(1);
				add(2);
				add(3);
			}
		};
		result.clear();
		result.addAll(set1);
		result.retainAll(set2);
		System.out.println("交集：" + result);

		result.clear();
		result.addAll(set1);
		result.removeAll(set2);
		System.out.println("差集：" + result);

		result.clear();
		result.addAll(set1);
		result.addAll(set2);
		System.out.println("并集：" + result);
	}
}
